Introduction

4XTRA - your best choice for IT Solutions

A Consultancy

specialising in Agile Development, offering project management, systems design and development

A provider

of a range of specialist tools for agile developers, with emphasis on the family of array languages

We also provide a number of products aimed at the educational field

A Vendor

of Dealing Systems (including our flagship product, called 4xtraDS) and bespoke financial software

An Applications Integrator

whether web-based or on client systems, we can deploy a range of products for all business needs: groupware collaborative systems; content management; accounting; and ERP

A Service Company

offering support, product selection and training


A Web Host

which can host simple web sites from as little as £1.50 per week, design and build complex e-commerce sites or provide a dedicated server to suit the most demanding application

A Supplier

of the AppsDrive range of USB flash drives, preloaded with software which run directly from the drive

A Partner

of some of the major players in the IT industry

APL Wiki The APL Wiki & Discussion Group

The Internet is now the primary reference source for software development. Countless online manuals ((who opens papers manuals now?) and discussion groups provide support and reference on practically any subject the rdeveloper might require.

But where are the reference sites for APL?

The simple answers are that there a many resources, if you know where to look. There is the new and growing APL Wiki, the comp.lang.apl discussion group and vendors also provide specialised support:

  • Dyalog runs a number of specialised email lists including some run by their own server, which have to be subcribed to directly from their web site
  • MicroAPL have a forum dedicated to APLX
  • APL20000 for the descendants of STSC's APL
  • APL Next for the new Visual APL

    • We can't find forums for APL2 (from IBM) or Soliton (the current Sharp APL), which is a lapse on their part, not ours.

And of course, the best resource for APL for the last 20 years is Vector the journal of the British APL Association

There are many other vendors and resource pages, please don't think of this as an exhaustive list